安达曼海珊瑚礁壁上收缩的锤头珊瑚群

y of hammer coral (Fimbriaphyllia ancora), also known as anchor coral, grows across a reef wall with its polyps fully retracted, a key indicator species for coral reef health and marine conservation monitoring. Named for its anchor-shaped tentacles, this coral is a primary food source for hawksbill turtles, and its condition is closely watched by scientists tracking bleaching risk ahead of the forecast El Nino warming event. 4K, wide angle, vertical wide shot, scuba diver POV. Ko Haa Archipelago, Andaman Sea, Krabi Province, Thailand.